r1=1.0;
r2=1.05;
r3=1.1;
r4=1.15;
r5=1.2;
cl1 = 0.02;
pi=Acos(1.0);
a0=Pi/2;
Point(1) = {0, 0, 0, cl1};
Point(2) = {r1, 0, 0, cl1};
Point(4) = {r3, 0, 0, cl1};
Point(5) = {r5, 0, 0, cl1};
Point(6) = {r1*Cos(1.0*a0/12), r1*Sin(1.0*a0/12), 0, cl1};
Point(7) = {r2*Cos(1.0*a0/12), r2*Sin(1.0*a0/12), 0, cl1};
Point(8) = {r2*Cos(3.0*a0/12), r2*Sin(3.0*a0/12), 0, cl1};
Point(9) = {r1*Cos(3.0*a0/12), r1*Sin(3.0*a0/12), 0, cl1};
Point(10) = {r1*Cos(5.0*a0/12), r1*Sin(5.0*a0/12), 0, cl1};
Point(11) = {r2*Cos(5.0*a0/12), r2*Sin(5.0*a0/12), 0, cl1};
Point(12) = {r2*Cos(7.0*a0/12), r2*Sin(7.0*a0/12), 0, cl1};
Point(13) = {r1*Cos(7.0*a0/12), r1*Sin(7.0*a0/12), 0, cl1};
Point(14) = {r1*Cos(9.0*a0/12), r1*Sin(9.0*a0/12), 0, cl1};
Point(15) = {r2*Cos(9.0*a0/12), r2*Sin(9.0*a0/12), 0, cl1};
Point(16) = {r2*Cos(11.0*a0/12), r2*Sin(11.0*a0/12), 0, cl1};
Point(17) = {r1*Cos(11.0*a0/12), r1*Sin(11.0*a0/12), 0, cl1};
Point(18) = {r1*Cos(12.0*a0/12), r1*Sin(12.0*a0/12), 0, cl1};
Point(19) = {r5*Cos(1*a0/12), r5*Sin(1*a0/12), 0, cl1};
Point(20) = {r4*Cos(1*a0/12), r4*Sin(1*a0/12), 0, cl1};
Point(21) = {r4*Cos(3*a0/12), r4*Sin(3*a0/12), 0, cl1};
Point(22) = {r5*Cos(3*a0/12), r5*Sin(3*a0/12), 0, cl1};
Point(23) = {r5*Cos(5*a0/12), r5*Sin(5*a0/12), 0, cl1};
Point(24) = {r4*Cos(5*a0/12), r4*Sin(5*a0/12), 0, cl1};
Point(25) = {r4*Cos(7*a0/12), r4*Sin(7*a0/12), 0, cl1};
Point(26) = {r5*Cos(7*a0/12), r5*Sin(7*a0/12), 0, cl1};
Point(27) = {r5*Cos(9*a0/12), r5*Sin(9*a0/12), 0, cl1};
Point(28) = {r4*Cos(9*a0/12), r4*Sin(9*a0/12), 0, cl1};
Point(29) = {r4*Cos(11*a0/12), r4*Sin(11*a0/12), 0, cl1};
Point(30) = {r5*Cos(11*a0/12), r5*Sin(11*a0/12), 0, cl1};
Point(31) = {r5*Cos(12*a0/12), r5*Sin(12*a0/12), 0, cl1};
Point(32) = {r3*Cos(12*a0/12), r3*Sin(12*a0/12), 0, cl1};
Circle(1) = {2, 1, 6};
Circle(2) = {7, 1, 8};
Circle(3) = {9, 1, 10};
Circle(4) = {11, 1, 12};
Circle(5) = {13, 1, 14};
Circle(6) = {15, 1, 16};
Circle(7) = {17, 1, 18};
Circle(8) = {5, 1, 19};
Circle(9) = {20, 1, 21};
Circle(10) = {22, 1, 23};
Circle(11) = {24, 1, 25};
Circle(12) = {26, 1, 27};
Circle(13) = {28, 1, 29};
Circle(14) = {30, 1, 31};
Circle(15) = {4, 1, 32};
Line(16) = {2, 4};
Line(17) = {4, 5};
Line(18) = {6, 7};
Line(19) = {20, 19};
Line(20) = {9, 8};
Line(21) = {21, 22};
Line(22) = {10, 11};
Line(23) = {24, 23};
Line(24) = {13, 12};
Line(25) = {25, 26};
Line(26) = {14, 15};
Line(27) = {28, 27};
Line(28) = {17, 16};
Line(29) = {29, 30};
Line(30) = {18, 32};
Line(31) = {32, 31};
Line Loop(32) = {5, 26, 6, -28, 7, 30, -15, -16, 1, 18, 2, -20, 3, 22, 4, -24};
Plane Surface(33) = {32};
Line Loop(34) = {15, 31, -14, -29, -13, 27, -12, -25, -11, 23, -10, -21, -9, 19, -8, -17};
Plane Surface(35) = {34};
